[Spark Plug Repair Kit]
[Limited Access Spark Plug Chase]
[14mm Spark Plug Rethread Kit]
[Oxygen Sensor Thread Chaser]
[14 & 18mm Spark Plug Hole Chaser]
[Thread Repair Kit M14-1.25]
M14-1.25 thread size Use with drill bit size 9/16 in. (14.5 mm) Restore threads to the original sizing Includes: (1) 4241 HSS M14-1.25 UNC tap, (3) 304 stainless steel inserts, and (1) Install/punch tool